a kind of aperture

A diaphragm and diaphragm hole technology, applied in the field of diaphragms, can solve the problems of diaphragm wear, diaphragm stuck, poor reliability of diaphragm operation, etc.

Active Publication Date: 2021-05-04
CHANGCHUN INST OF OPTICS FINE MECHANICS & PHYSICS CHINESE ACAD OF SCI
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0003] First, because two adjacent diaphragms partially overlap, and the diaphragms need to be rotated frequently, it is very easy to cause serious wear of the diaphragms, which seriously affects the service life of the diaphragms, thereby affecting the service life of the diaphrag

Method used

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  • a kind of aperture
  • a kind of aperture
  • a kind of aperture

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Example Embodiment

[0049] The following will clearly and completely describe the technical solutions in the embodiments of the present invention with reference to the accompanying drawings in the embodiments of the present invention. Obviously, the described embodiments are only some, not all, embodiments of the present invention. Based on the embodiments of the present invention, all other embodiments obtained by persons of ordinary skill in the art without making creative efforts belong to the protection scope of the present invention.

[0050] In order to enable those skilled in the art to better understand the solution of the present invention, the present invention will be further described in detail below in conjunction with the accompanying drawings and specific embodiments.

[0051] Please refer to Figure 1 to Figure 8 , figure 1 A structural diagram of the aperture provided for a specific embodiment of the present invention; figure 2 for figure 1 Middle A-A sectional view; image ...

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Abstract

The invention discloses a diaphragm, which comprises a positioning plate with a light-transmitting hole, an adjusting plate parallel to the positioning plate and having several aperture holes with different apertures, and an adjusting assembly passing through the positioning plate and the adjusting plate in sequence. The adjusting assembly can Drive the adjustment plate to slide along the axial direction of the light transmission hole to be close to or away from the positioning plate. When the adjustment plate is away from the positioning plate, it can also drive the adjustment plate to rotate relative to the positioning plate along the circumference of the light transmission hole until any aperture hole is aligned with the transmission plate. The light hole, so that the diaphragm holes of different apertures can be aligned with the light transmission hole, and then the aperture of the diaphragm hole can be adjusted. The aperture adjustment of the diaphragm hole mainly depends on several formed diaphragm holes, without relying on multiple diaphragms, so as to avoid the phenomenon of poor aperture adjustment caused by the stagnation of the diaphragms; the adjustment plate only rotates when it is away from the positioning plate, Serious wear of the adjustment plate and the positioning plate due to contact rotation is avoided; therefore, the diaphragm provided by the present invention has high service life and working reliability.

Description

technical field [0001] The invention relates to an optical device, in particular to an aperture. Background technique [0002] The diaphragm is an important parameter in the optical system, which can adjust the numerical aperture of the optical system, change the field of view and vignetting of the optical system. In order to improve the adaptability, the common apertures are mostly variable apertures. The variable apertures include a fixed ring, a movable ring and several aperture plates. One end of any aperture plate is fixed to the fixed ring by a fixed pin, and the other end is fixed to the fixed ring by a movable pin. Installed on the movable ring, when the movable ring is rotated, the movable ring will push the movable pin to rotate, and the movable pin will drive the diaphragm plate to rotate with the fixed pin as the fulcrum, thereby realizing the change of the aperture of the diaphragm hole. Although the iris diaphragm can continuously adjust the size of the apertu...

Claims

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Application Information

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IPC IPC(8): G02B26/02
CPCG02B26/02
Inventor 吕涛付东辉陈小云
Owner CHANGCHUN INST OF OPTICS FINE MECHANICS & PHYSICS CHINESE ACAD OF SCI
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